Chair arm



FIG. 1 is a perspective view of a chair arm;

FIG. 2 is a front elevational view of the chair arm;

FIG. 3 is a first side elevational view of the chair arm;

FIG. 4 is a second side elevational view of the chair arm;

FIG. 5 is a rear side elevational view of the chair arm;

FIG. 6 is a top plan view of the chair arm; and,

FIG. 7 is a bottom plan view of the chair arm.

The broken lines shown in the drawings are included for the purposes of illustrating portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for chair arm, as shown. 